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so i just saw Minimob has the tak 138 scut setup with 3 different head options. Anyone tried this kit? sounds pretty nice to have a 138 out of a crf50 frame
 

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i havent heard of anyone actually buying the 138 kit yet.



i was thinking about it but i dont like the thought of a super short piston.



anyone have a picture of the piston against a 124cc piston????
 

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it is a scut piston but not as short as others....



but it is forged!!!! which I think is the biggest selling point for me!
 

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I personally wouldn't run a skirtless piston. Id stick with a 117 setup! Power with reliability ;) If its built right the 117 is a very good running engine.
 

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when you say not as short as other what do you mean?



i ran the scut 106 setup for a bit and it realy didnt last lond at all.
 

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I have a Takegawa 138+R Crate motor will the full skirt 56mm piston and dedicated Takegawa cases.



I wouldn't run a SCUT 138. They flat out don't hold up over the long term.
 

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i have run a 56mm piston in a crf based bottom end and it worked great.



very reliable, would recommend building one if you want a big motor.



they do a 56mm stroker crank to fit in the crf cases, but i didnt go that far.
 

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yes correct



57mm piston took the skirt out a little to far for my liking.



133cc was plenty, shame that motor is no more!
 

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taz69 said:
Hey Z would you OR Smiffy know the Takegawa part # to the 56mm piston you were using. I have one thats a 01-02-8242.. It was on a 124+R engine that takegawa made for a little while.. It was a 50mm crank by 56mm piston.. Works great on a 54mm crank as well with a 69mm cylinder.. Just looking to see what piston you guys were using???? ;) And it was made for the Superhead +R with the older 28mm intake and what not..


They made a 56mm piston? forged? skirted?



Does anyone know if they made any forged pistons other than the 54mm for the old superhead and the 57mm (138) scut?



I love the idea of a 56 x 50 motor... how did it run?
 

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The piston i used was takegawa part#



01-02-0101



56mm skirted piston for the superhead+r - not forged



worked a treat and was the best engine i ever had.



59mm outer liner is the maximum outer diametre of skirt i would go in gb4 cases as they are quite week in comparison to the honda nice cases.
 

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burch753 said:
They made a 56mm piston? forged? skirted?



Does anyone know if they made any forged pistons other than the 54mm for the old superhead and the 57mm (138) scut?



I love the idea of a 56 x 50 motor... how did it run?


Aaron, I can offset bore the Honda cases for a big setup, but the jug would likely need to be done too, since all the 56-57 bores I've seen were 69mm tall.
 

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i took a 124 takegawa cylinder and did exactly that, i couldnt find anyone at the time that did a cylinder to fit.



was a waste of a brand new +r barrel but hey i had to do it.
 

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Z had the 138 piston which is actually a 57mm piston.



could be done, but good luck trying to get a gasket to not leak on a crf (gb4) cased motor
 

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smiffy said:
i took a 124 takegawa cylinder and did exactly that, i couldnt find anyone at the time that did a cylinder to fit.



was a waste of a brand new +r barrel but hey i had to do it.


LOL. I only wasted a DrATV $50 one:) Now, the Greek guy has them pretty cheap. I broke the 56 but the 57 is running with a 54mm Kitaco crank just fine.
 
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